5 stars: Very enjoyable. Thus app allows you to record guesses so you can keep track of user progress.
5 stars: An excellent therapy for Puerto Rican seniors! *** I like the option of different levels of difficulty. I also like the circle around the number when you are searching how many of a particular number have been filled on each particular group of nine numbers (or in a particular row or column).
3 stars: I prefer ad-free apps and am willing to pay. There is no purchase option. The reset button is also too easy to accidently hit. I constantly hit it by mistake. There is no check option when you hit reset. It wipes out everything you've done instantly. It's sort like a mean prank. I like hard puzzles and found the one puzzle I played sufficiently challenging. The flashing ads on the bottom of the screen are distracting and annoying.
3 stars: I like it because it doesn't have many ads and also the interface is pretty simple It's not overly busy like other apps. ***BUT be careful with malicious links. Make sure you have an app or software that blocks these kinds of things.
2 stars: Love it, but... Imagine me: playing my beloved sudoku in bed, my partner already in dreamland. I finish my suduko: yeah boyyyy! An ad with sounds playing through the speakers. Damn bro there goes my chill unwind time before bed. Checked sound settings: all are off.. why you scare me silly ads? Also, the x's in the ads 9 out of 10 times send me to the app store page so yeah that's...